Seven Seas: The Arctic and Antarctic, North and South Pacific, North and South Atlantic, and the Indian Ocean.

Seven-year Itch: The seven-year itch has been synonymous for sexual desire since 1660. Seven-year itch had no sexual connotation when first recorded in 1899, simply meaning "a type of itch allegedly requiring seven years of healing." Influenced by the sense of itch as sexual desire, it came to mean a married man's urge to roam after seven years of marriage, a meaning widely popularized by the Marilyn Monroe movie The Seven Year Itch (1955). Encyclopedia of Word and Phrase Origins (Hendrickson, 1987)